/Engine/Plugins/Experimental/PlatformCrypto/Source/PlatformCryptoTypes/Public/PlatformCryptoTypes.h
Get the minimum required out-data size for a particular Ciphertext value
The minimum amount of space required to successfully call Update with
int32 GetUpdateBufferSizeBytes ( const [TArrayView](API\Runtime\Core\Containers\TArrayView)< const uint8 > Ciphertext ) const